近年来,由于耕作制度的变化,为红蜘蛛的生存繁殖提供了极有利的条件,只要气候适宜,即能暴发,成为夺取棉花高产的一大障碍。搞好红蜘蛛发生量的予测予报工作,及早作好防治准备,对控制红蜘蛛的发生,确保棉花安全生长关系很大。本站经多年的调查观察,发现苗期降雨量与早春田间虫量(早春基数)对苗期红蜘蛛的发生数量将起着主导作用。本文仅就这二个方面来予测棉花苗期红蜘蛛发生数量作如下探讨。一、资料来源红蜘蛛发生情况(包括早春基数和苗期 In recent years, due to the change of cultivation system, it has provided very favorable conditions for the survival and reproduction of spider mites. As long as the climate is suitable, the outbreak can become a major obstacle to the high yield of cotton. Do a good job of spider spider to predict the amount of work to be reported as early as possible preparation for the control of the occurrence of spider mites to ensure the safety of cotton a great relationship. The site after years of investigation and found that the seedling rainfall and early spring field insect population (early spring base) on the number of spider mite seedlings will play a leading role. This article only on these two aspects to determine the number of spider moths seedlings in the following discussion. First, the source of red spider occurrence (including the early spring base and seedling stage